JP4708560B2 - Vehicle wiper device - Google Patents

Vehicle wiper device Download PDF

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Publication number
JP4708560B2
JP4708560B2 JP2000402377A JP2000402377A JP4708560B2 JP 4708560 B2 JP4708560 B2 JP 4708560B2 JP 2000402377 A JP2000402377 A JP 2000402377A JP 2000402377 A JP2000402377 A JP 2000402377A JP 4708560 B2 JP4708560 B2 JP 4708560B2
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Japan
Prior art keywords
wiper
vehicle body
vehicle
motor
wiper motor
Prior art date
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Expired - Lifetime
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JP2000402377A
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Japanese (ja)
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JP2002200969A (en
Inventor
忠史 増田
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Subaru Corp
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Fuji Jukogyo KK
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Publication date
Application filed by Fuji Jukogyo KK filed Critical Fuji Jukogyo KK
Priority to JP2000402377A priority Critical patent/JP4708560B2/en
Priority to DE60133080T priority patent/DE60133080T2/en
Priority to EP01310858A priority patent/EP1219513B1/en
Priority to US10/028,713 priority patent/US6854154B2/en
Publication of JP2002200969A publication Critical patent/JP2002200969A/en
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Publication of JP4708560B2 publication Critical patent/JP4708560B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/0488—Wiper arrangement for crash protection or impact absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/043—Attachment of the wiper assembly to the vehicle
    • B60S1/0433—Attachement of a wiper modular assembly to the vehicle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/63—Frangible connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S248/00—Supports
    • Y10S248/90—Movable or disengageable on impact or overload
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S403/00—Joints and connections
    • Y10S403/03—Load-responsive release

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Transmission Devices (AREA)
  • Motor Or Generator Frames (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、車両用ワイパ装置に関する。
【０００２】
【従来の技術】
従来より、車両用ワイパ装置において、外部からの衝撃を吸収させる技術が必要とされている。その一例として、特開平１１−３４８０８号公報に開示される技術がある。この技術は、ピボットホルダ部が破断及び脱落することによって、ワイパアームの基端部にかかる外部からの衝撃を吸収するものである。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来の技術では、ピボットホルダ部のみを脱落させ、ワイパアームを駆動するワイパモータ部は車体に結合されたままだった。ワイパモータ部は、重量があることから剛性が高く、ワイパモータ部に車体外方から外力が加わった場合、衝撃を吸収することができなかった。特に、フロントワイパにおいては、ワイパ装置はフロントウインドシールドの下縁部に沿って車幅方向に延在する閉断面形状のバルクヘッドに収納され、ワイパモータもバルクヘッドに収納されている場合が多く、このような構造であるとワイパモータとバルクヘッドとの間隙が少ないことから、さらに衝撃を吸収しづらいという課題を有していた。
【０００４】
本発明の課題は、ワイパ装置、特に剛性が高くバルクヘッドとの間隙が少ないワイパモータ部に車体外方から外力が加わった場合においても十分な衝撃吸収を可能にすることである。さらに、本発明の課題は、前記ワイパモータ部の外力に対する衝撃吸収に加えて、ワイパ装置自体も車体外方からの外力により完全に脱落させることによってワイパ装置全体の衝撃吸収性能を向上させることである。
【０００５】
【課題を解決するための手段】
以上の課題を解決するため、請求項１記載の発明は、例えば、図１に示すように、ウインドシールド２を払拭するワイパブレード１１が先端に取り付けられた揺動自在なワイパアーム１２と、このワイパアーム１２を駆動するワイパモータ１３とを備える車両用ワイパ装置１において、例えば、図２に示すように、前記ワイパモータ１３が取り付けられる支持部材１７を備え、前記支持部材１７は、一端側で車体に対し揺動可能に取り付けられて、他端側で車体に対し固定されており、かつ、車体固定部１７ａの近傍に破断強度の低い脆弱部１７ｃが設けられ、前記ワイパモータ１３を車体に対し、外部からの衝撃により前記脆弱部が破断して車体内方に脱落可能に取り付けたことを特徴とする。
【０００６】
請求項１記載の発明によれば、ワイパモータが、外部からの衝撃により前記脆弱部が破断して車体内方に脱落するので、外部からの衝撃をワイパモータ部で吸収できる。
【０００８】
請求項１記載の発明によれば、ワイパモータの支持部材は車体固定部近傍に破断強度の低い脆弱部を有するので、ワイパモータ部に外力が加わると、脆弱部が破断して、ワイパモータ支持部材が車体内方に揺動することにより衝撃を吸収できる。
【０００９】
請求項２記載の発明は、ウインドシールドを払拭するワイパブレードが先端に取り付けられた揺動自在なワイパアームと、このワイパアームを駆動するワイパモータとを備える車両用ワイパ装置において、前記ワイパモータが取り付けられる支持部材を備え、前記支持部材は、両端が車体に対して固定されており、かつ、車体固定部の近傍に破断強度の低い脆弱部が設けられ、前記ワイパモータを車体に対し、外部からの衝撃により前記脆弱部が破断して車体内方に脱落可能に取り付けたことを特徴とする。
【００１０】
請求項２記載の発明によれば、ワイパモータ支持部材は、両端の車体固定部近傍に破断強度の低い脆弱部を有するので、ワイパモータ支持部材の両端を車体に対して固定した場合でも、外力により脆弱部が破断して、ワイパモータ支持部材が車体内方に脱落することにより衝撃を吸収できる。
【００１１】
請求項３記載の発明は、例えば、図２に示すように、前記ワイパアーム１２、１２の基端部が取り付けられるピボット軸１０４、１０５を回転自在に支持するピボットホルダ１４、１５の車体固定部１４ａ、１５ａの近傍に破断強度の低い脆弱部１４ｃ、１５ｃが設けられていることを特徴とする。
【００１２】
請求項３記載の発明によれば、ワイパアームピボット軸のピボットホルダも車体固定部近傍に破断強度の低い脆弱部を有するので、ピボットホルダ部に外力が加わると、ピボットホルダの脆弱部が破断し、ピボットホルダ部が脱落して、ワイパ装置全体が完全に脱落する。従って、ワイパ装置全体の衝撃吸収性能を向上できる。
【００１３】
【発明の実施の形態】
以下、図を参照して本発明の実施の形態を詳細に説明する。
この実施形態において、車両用ワイパ装置１は、図１に示すように、フロントウインドシールド２を払拭するワイパブレード１１を先端に取り付けた左右一対のワイパアーム１２が同時に揺動するタンデムタイプに適用したものである。この車両用ワイパ装置１は、ワイパモータ１３の動力をリンク機構１００を介して伝達させることにより、各ワイパアーム１２を揺動させている。
【００１４】
リンク機構１００は、図２に示すように、動力を伝達するロッド１０１と、動力を転換するクランク部材１０２と、ロッド１０１とクランク部材１０２を結合させるリンクボールジョイント１０３を備える。このクランク部材１０２、１０２には、それぞれ、第１ピボット軸１０４及び第２ピボット軸１０５が結合される。第１ピボット軸１０４及び第２ピボット軸１０５は、第１ピボットホルダ１４及び第２ピボットホルダ１５にそれぞれ回転可能に取り付けられる。そして、第１ピボットホルダ１４と第２ピボットホルダ１５は、ワイパモータ１３部で上方に凸となるように屈曲させたパイプ１６の両端にそれぞれ結合される。このパイプ１６の凸形状上部にモータブラケット１７（支持部材）が取り付けられる。
以上のように、第１ピボットホルダ１４、第２ピボットホルダ１５及びワイパモータ１３が支持されるモータブラケット１７が、パイプ１６を介して、一体化されるため、車両用ワイパ装置１は剛性が高いモジュール構造となる。
【００１５】
次に、モータブラケット１７、第１ピボットホルダ１４及び第２ピボットホルダ１５の詳細について説明する。
まず、モータブラケット１７において、その中央部には、ワイパモータ１３がねじ１３ａ、１３ａ、１３ａにより取り付けられる。モータブラケット１７の下端側には、ねじ１７１とワッシャ１７２及びゴム１７３によって車体に固定されるモータブラケット固定部１７ａが設けられる。そして、ワイパモータ１３とモータブラケット固定部１７ａとの間には、楕円孔１７ｂが形成される。この楕円孔１７ｂの両側部が破断強度の低い脆弱部１７ｃ、１７ｃとなる。モータブラケット１７の他端側は、パイプ１６の軸受部１７ｄになっており、ボルト・ナット１７０、１７０、１７０、１７０によってパイプ１６に対し回転可能に取り付けられる。
【００１６】
また、第１ピボットホルダ１４において、その上方にねじ１４１とワッシャ１４２及びゴム１４３によって車体に固定される第１固定部１４ａが設けられる。そして、第１固定部１４ａと第１ピボット軸１０４との間には、楕円孔１４ｂが形成される。この楕円孔１４ｂの両側部が破断強度の低い脆弱部１４ｃ、１４ｃとなる。さらに、第２ピボットホルダ１５においても同様に、その右方にねじ１５１とワッシャ１５２及びゴム１５３によって車体に固定される第２固定部１５ａが設けられる。そして、第２固定部１５ａと第２ピボット軸１０５との間には、楕円孔１５ｂが形成される。この楕円孔１５ｂの両側部が破断強度の低い脆弱部１５ｃ、１５ｃとなる。
【００１７】
次に、車両用ワイパ装置１を含む部分に外力が加わった時の作用を説明する。
まず、ワイパモータ１３部に外力が加わった時は、図３、４に示すように、モータブラケット１７の脆弱部１７ｃ、１７ｃが破断することにより、モータブラケット１７は、車体内方に向かって回転して脱落する。また、ワイパモータ１３部は、図中に二点鎖線で示す車体パネルで形成される狭いスペース内を、回転することにより脱落する。
【００１８】
また、第１ピボットホルダ１４部に外力が加わった時は、図５、６に示すように、第１ピボットホルダ１４の脆弱部１４ｃ、１４ｃが破断することにより、第１ピボットホルダ１４は車体内方に向かって脱落する。一方、第２ピボットホルダ１５に外力が加わった時も同様に、図７、８に示すように、第２ピボットホルダ１５は、脆弱部１５ｃ、１５ｃが破断して車体内方に脱落する。
【００１９】
従って、以上の実施形態によれば、ワイパモータ１３部に外力が加わると、モータブラケット１７の脆弱部１７ｃ、１７ｃが破断して車体内方に回転して脱落するため、ワイパモータ１３部での衝撃を吸収できる。
そして、モータブラケット１７のみならず、第１ピボットホルダ１４及び第２ピボットホルダ１５も脱落させることにより、車両用ワイパ装置１を外部からの衝撃で完全に脱落させて車両用ワイパ装置１全体の衝撃吸収性能を向上できる。
【００２０】
なお、以上の実施の形態においては、楕円孔を形成することにより脆弱部としたが、本発明はこれに限定されるものではなく、側方から切り欠きを形成した脆弱部であっても良く、また、板厚を薄くして破断強度を低くした脆弱部であっても良い。
また、モータブラケットの両端を車体に対して固定させ、車体固定部近傍に破断強度の低い脆弱部を設けて、モータブラケットを外力により脱落させる構造としても良い。
さらに、その他、具体的な細部構造等についても適宜に変更可能であることは勿論である。
【００２１】
【発明の効果】
請求項１又は２記載の発明によれば、ワイパモータが、外部からの衝撃により前記脆弱部が破断して車体内方に脱落するので、外部からの衝撃をワイパモータ部で吸収できる。
【００２２】
請求項１記載の発明によれば、外部からの衝撃により脆弱部が破断したワイパモータ支持部材が、車体内方に揺動することにより衝撃を吸収できる。
【００２３】
請求項２記載の発明によれば、ワイパモータ支持部材の両端を車体に対して固定した場合でも、外部からの衝撃により脆弱部が破断したワイパモータ支持部材が、車体内方に脱落することにより衝撃を吸収できる。
【００２４】
請求項３記載の発明によれば、請求項１または２記載の発明により得られる効果に加え、外部からの衝撃により脆弱部が破断したピボットホルダ部も脱落するので、ワイパ装置全体が完全に脱落し、従って、ワイパ装置全体の衝撃吸収性能を向上できる。
【図面の簡単な説明】
【図１】本発明に係る車両用ワイパ装置を適用した一実施の形態を示した全体外観図である。
【図２】本発明に係る車両用ワイパ装置の概略正面図である。
【図３】図２の矢印Ａ−Ａ線に沿った断面図である。
【図４】図３のモータブラケットの破断後を示す断面図である。
【図５】図２の矢印Ｂ−Ｂ線に沿った断面図である。
【図６】図５の第１ピボットホルダの破断後を示す断面図である。
【図７】図２の矢印Ｃ方向の矢視図である。
【図８】図７の第２ピボットホルダの破断後を示す矢視図である。
【符号の説明】
１ 車両用ワイパ装置
１１ ワイパブレード
１２ ワイパアーム
１３ ワイパモータ
１３ａ ねじ
１４ 第１ピボットホルダ
１４ａ 第１固定部
１４ｂ 楕円孔
１４ｃ 脆弱部
１５ 第２ピボットホルダ
１５ａ 第２固定部
１５ｂ 楕円孔
１５ｃ 脆弱部
１６ パイプ
１７ モータブラケット（支持部材）
１７ａ モータブラケット固定部
１７ｂ 楕円孔
１７ｃ 脆弱部
１７ｄ 軸受部
１００ リンク機構
１０１ ロッド
１０２ クランク部材
１０３ リンクボールジョイント
１０４ 第１ピボット軸
１０５ 第２ピボット軸
１４１、１５１、１７１ ねじ
１４２、１５２、１７２ ワッシャ
１４３、１５３、１７３ ゴム
１７０ ボルト・ナット
２ フロントウインドシールド[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle wiper device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a vehicle wiper device, a technique for absorbing external impact has been required. As an example, there is a technique disclosed in Japanese Patent Laid-Open No. 11-34808. This technique absorbs an external impact applied to the base end portion of the wiper arm when the pivot holder portion is broken and dropped.
[0003]
[Problems to be solved by the invention]
However, in the conventional technique, only the pivot holder portion is dropped, and the wiper motor portion that drives the wiper arm remains coupled to the vehicle body. The wiper motor part has high rigidity because of its weight, and when an external force is applied to the wiper motor part from the outside of the vehicle body, the shock cannot be absorbed. In particular, in the front wiper, the wiper device is housed in a bulkhead having a closed cross-sectional shape extending in the vehicle width direction along the lower edge of the front windshield, and the wiper motor is often housed in the bulkhead. With such a structure, since the gap between the wiper motor and the bulkhead is small, there is a problem that it is difficult to absorb the impact.
[0004]
An object of the present invention is to enable sufficient shock absorption even when an external force is applied from the outside of a vehicle body to a wiper device, particularly a wiper motor portion having high rigidity and a small gap with a bulkhead. Furthermore, an object of the present invention is to improve the impact absorbing performance of the entire wiper device by completely removing the wiper device itself by the external force from the outside of the vehicle body in addition to absorbing the impact to the external force of the wiper motor unit. .
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the invention described in claim 1 includes, for example, a swingable wiper arm 12 having a wiper blade 11 for wiping the windshield 2 attached to the tip, as shown in FIG. In the vehicle wiper device 1 including the wiper motor 13 that drives the motor 12, a support member 17 to which the wiper motor 13 is attached is provided , for example, as shown in FIG. A fragile portion 17c having a low breaking strength is provided in the vicinity of the vehicle body fixing portion 17a. The wiper motor 13 is attached to the vehicle body from the outside. The fragile portion is broken by an impact and is attached to the inside of the vehicle body so as to be detached .
[0006]
According to the first aspect of the invention, the wiper motor breaks the fragile portion due to an external impact and falls off inward of the vehicle body, so that the external impact can be absorbed by the wiper motor portion.
[0008]
According to the first aspect of the present invention, since the support member of the wiper motor has the weak portion having a low breaking strength in the vicinity of the vehicle body fixing portion, when an external force is applied to the wiper motor portion, the weak portion is broken and the wiper motor support member is Shock can be absorbed by swinging inward.
[0009]
According to a second aspect of the present invention, there is provided a vehicle wiper device comprising: a swingable wiper arm having a wiper blade for wiping the windshield attached to the tip; and a wiper motor for driving the wiper arm. The support member to which the wiper motor is attached The support member has both ends fixed to the vehicle body, and a weak portion having a low breaking strength is provided in the vicinity of the vehicle body fixing portion, and the wiper motor is applied to the vehicle body by an external impact. The fragile portion is broken and attached to the inside of the vehicle body so that it can be detached .
[0010]
According to the invention described in claim 2 , since the wiper motor support member has weak portions having low breaking strength in the vicinity of the vehicle body fixing portions at both ends, even when both ends of the wiper motor support member are fixed to the vehicle body, the wiper motor support members are weak by external force. The portion is broken and the wiper motor support member is dropped inward of the vehicle body, so that the impact can be absorbed.
[0011]
In the invention according to claim 3 , for example, as shown in FIG. 2, the vehicle body fixing portion 14a of the pivot holders 14 and 15 for rotatably supporting the pivot shafts 104 and 105 to which the base ends of the wiper arms 12 and 12 are attached is provided. , 15a are provided with weak portions 14c, 15c having a low breaking strength.
[0012]
According to the invention of claim 3, since the pivot holder of the wiper arm pivot shaft also has a weak portion having a low breaking strength in the vicinity of the vehicle body fixing portion, when an external force is applied to the pivot holder portion, the weak portion of the pivot holder is broken, The pivot holder part falls off, and the entire wiper device falls off completely. Therefore, the impact absorbing performance of the entire wiper device can be improved.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In this embodiment, as shown in FIG. 1, the vehicle wiper device 1 is applied to a tandem type in which a pair of left and right wiper arms 12 having wiper blades 11 for wiping the front windshield 2 swinging at the same time swing simultaneously. It is. The vehicle wiper device 1 swings each wiper arm 12 by transmitting the power of the wiper motor 13 through the link mechanism 100.
[0014]
As shown in FIG. 2, the link mechanism 100 includes a rod 101 that transmits power, a crank member 102 that converts power, and a link ball joint 103 that couples the rod 101 and the crank member 102. A first pivot shaft 104 and a second pivot shaft 105 are coupled to the crank members 102, 102, respectively. The first pivot shaft 104 and the second pivot shaft 105 are rotatably attached to the first pivot holder 14 and the second pivot holder 15, respectively. The first pivot holder 14 and the second pivot holder 15 are respectively coupled to both ends of the pipe 16 bent so as to be convex upward by the wiper motor 13 portion. A motor bracket 17 (support member) is attached to the convex upper portion of the pipe 16.
As described above, since the motor bracket 17 on which the first pivot holder 14, the second pivot holder 15 and the wiper motor 13 are supported is integrated through the pipe 16, the vehicle wiper device 1 is a highly rigid module. It becomes a structure.
[0015]
Next, the details of the motor bracket 17, the first pivot holder 14, and the second pivot holder 15 will be described.
First, the wiper motor 13 is attached to the central portion of the motor bracket 17 with screws 13a, 13a, and 13a. On the lower end side of the motor bracket 17, a motor bracket fixing portion 17 a that is fixed to the vehicle body by a screw 171, a washer 172, and a rubber 173 is provided. An elliptical hole 17b is formed between the wiper motor 13 and the motor bracket fixing portion 17a. Both side portions of the elliptical hole 17b become weak portions 17c and 17c having a low breaking strength. The other end side of the motor bracket 17 is a bearing portion 17d of the pipe 16 and is rotatably attached to the pipe 16 by bolts / nuts 170, 170, 170, 170.
[0016]
Further, in the first pivot holder 14, a first fixing portion 14 a that is fixed to the vehicle body by a screw 141, a washer 142, and a rubber 143 is provided above the first pivot holder 14. An elliptical hole 14 b is formed between the first fixed portion 14 a and the first pivot shaft 104. Both side portions of the elliptical hole 14b become weak portions 14c and 14c having a low breaking strength. Further, the second pivot holder 15 is similarly provided with a second fixing portion 15 a fixed to the vehicle body by a screw 151, a washer 152, and a rubber 153 on the right side thereof. An elliptical hole 15 b is formed between the second fixing portion 15 a and the second pivot shaft 105. Both side portions of the elliptical hole 15b become weak portions 15c and 15c having a low breaking strength.
[0017]
Next, an operation when an external force is applied to a portion including the vehicle wiper device 1 will be described.
First, when an external force is applied to the wiper motor 13 portion, as shown in FIGS. 3 and 4, the fragile portions 17c and 17c of the motor bracket 17 are broken so that the motor bracket 17 rotates toward the inside of the vehicle body. Fall off. Further, the wiper motor 13 part falls off by rotating in a narrow space formed by a vehicle body panel indicated by a two-dot chain line in the drawing.
[0018]
When an external force is applied to the first pivot holder 14, as shown in FIGS. 5 and 6, the fragile portions 14 c and 14 c of the first pivot holder 14 are broken, so that the first pivot holder 14 is moved inside the vehicle body. Drop off towards the direction. On the other hand, when an external force is applied to the second pivot holder 15, similarly, as shown in FIGS. 7 and 8, the fragile portions 15 c and 15 c break and the second pivot holder 15 falls off in the vehicle body.
[0019]
Therefore, according to the above embodiment, when an external force is applied to the wiper motor 13 portion, the fragile portions 17c and 17c of the motor bracket 17 are broken and rotated inwardly from the vehicle body, so that the impact at the wiper motor 13 portion is affected. Can absorb.
Then, not only the motor bracket 17 but also the first pivot holder 14 and the second pivot holder 15 are dropped, so that the vehicle wiper device 1 is completely dropped by an external impact, and the entire vehicle wiper device 1 is impacted. Absorption performance can be improved.
[0020]
In the above embodiment, the fragile portion is formed by forming an elliptical hole. However, the present invention is not limited to this, and may be a fragile portion having a notch formed from the side. Moreover, the weak part which made thin plate | board thickness thin and made fracture strength low may be sufficient.
Moreover, it is good also as a structure which fixes the both ends of a motor bracket with respect to a vehicle body, provides the weak part with a low fracture strength in the vehicle body fixing | fixed part vicinity, and drops a motor bracket with external force.
Furthermore, it is needless to say that other specific detailed structures can be appropriately changed.
[0021]
【The invention's effect】
According to the first or second aspect of the invention, the wiper motor breaks the fragile portion due to an external impact and falls off inward of the vehicle body, so that the external impact can be absorbed by the wiper motor portion.
[0022]
According to the first aspect of the present invention, the wiper motor support member whose fragile portion is broken by an external impact can absorb the impact by swinging inward of the vehicle body.
[0023]
According to the second aspect of the present invention, even when both ends of the wiper motor support member are fixed to the vehicle body, the wiper motor support member whose fragile portion is broken by an external impact is dropped to the inside of the vehicle body, and the impact is applied. Can absorb.
[0024]
According to the invention described in claim 3 , in addition to the effect obtained by the invention described in claim 1 or 2, the pivot holder part in which the fragile part is broken by an external impact also falls off, so that the entire wiper device is completely dropped off. Therefore, the impact absorbing performance of the entire wiper device can be improved.
[Brief description of the drawings]
FIG. 1 is an overall external view showing an embodiment to which a vehicle wiper device according to the present invention is applied.
FIG. 2 is a schematic front view of the vehicle wiper device according to the present invention.
3 is a cross-sectional view taken along the line AA in FIG.
4 is a cross-sectional view showing the motor bracket of FIG. 3 after being broken. FIG.
5 is a cross-sectional view taken along the line BB in FIG.
6 is a cross-sectional view of the first pivot holder of FIG. 5 after fracture.
7 is an arrow view in the direction of arrow C in FIG.
8 is an arrow view showing the second pivot holder of FIG. 7 after being broken. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle wiper apparatus 11 Wiper blade 12 Wiper arm 13 Wiper motor 13a Screw 14 1st pivot holder 14a 1st fixing | fixed part 14b Elliptical hole 14c Fragile part 15 2nd pivot holder 15a 2nd fixing | fixed part 15b Elliptical hole 15c Fragile part 16 Pipe 17 Motor Bracket (support member)
17a Motor bracket fixing portion 17b Elliptical hole 17c Fragile portion 17d Bearing portion 100 Link mechanism 101 Rod 102 Crank member 103 Link ball joint 104 First pivot shaft 105 Second pivot shafts 141, 151, 171 Screws 142, 152, 172 Washers 143, 153, 173 Rubber 170 Bolt / Nut 2 Front windshield

Claims (3)

ウインドシールドを払拭するワイパブレードが先端に取り付けられた揺動自在なワイパアームと、このワイパアームを駆動するワイパモータとを備える車両用ワイパ装置において、
前記ワイパモータが取り付けられる支持部材を備え、
前記支持部材は、一端側で車体に対し揺動可能に取り付けられて、他端側で車体に対し固定されており、かつ、車体固定部の近傍に破断強度の低い脆弱部が設けられ、
前記ワイパモータを車体に対し、外部からの衝撃により前記脆弱部が破断して車体内方に脱落可能に取り付けたことを特徴とする車両用ワイパ装置。In a vehicle wiper device comprising a swingable wiper arm having a wiper blade for wiping the windshield attached to the tip, and a wiper motor for driving the wiper arm.
A support member to which the wiper motor is attached;
The support member is swingably attached to the vehicle body at one end side, fixed to the vehicle body at the other end side, and a weak portion having a low breaking strength is provided in the vicinity of the vehicle body fixing portion ,
The wiper motor to the vehicle body, the vehicle wiper apparatus is characterized in that mounted for falling the vehicle body inwards the fragile portion is broken by impact from outside. ウインドシールドを払拭するワイパブレードが先端に取り付けられた揺動自在なワイパアームと、このワイパアームを駆動するワイパモータとを備える車両用ワイパ装置において、
前記ワイパモータが取り付けられる支持部材を備え、
前記支持部材は、両端が車体に対して固定されており、かつ、車体固定部の近傍に破断強度の低い脆弱部が設けられ、
前記ワイパモータを車体に対し、外部からの衝撃により前記脆弱部が破断して車体内方に脱落可能に取り付けたことを特徴とする車両用ワイパ装置。In a vehicle wiper device comprising a swingable wiper arm having a wiper blade for wiping the windshield attached to the tip, and a wiper motor for driving the wiper arm.
A support member to which the wiper motor is attached;
Both ends of the support member are fixed to the vehicle body, and a weak portion having a low breaking strength is provided in the vicinity of the vehicle body fixing portion,
The wiper motor to the vehicle body, the vehicle wiper apparatus is characterized in that mounted for falling the vehicle body inwards the fragile portion is broken by impact from outside. 前記ワイパアームの基端部が取り付けられるピボット軸を回転自在に支持するピボットホルダの車体固定部の近傍に破断強度の低い脆弱部が設けられていることを特徴とする請求項１又は請求項２記載の車両用ワイパ装置。Claim 1 or claim 2, wherein the lower weak portion having rupture strength in the vicinity of the vehicle body fixing portion of the pivot holder for rotatably supporting a pivot shaft having a base end portion of the wiper arm is attached is provided Vehicle wiper device.
JP2000402377A 2000-12-28 2000-12-28 Vehicle wiper device Expired - Lifetime JP4708560B2 (en)

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JP2000402377A JP4708560B2 (en) 2000-12-28 2000-12-28 Vehicle wiper device
DE60133080T DE60133080T2 (en) 2000-12-28 2001-12-22 Wiper system for vehicles
EP01310858A EP1219513B1 (en) 2000-12-28 2001-12-22 Wiper assembly for vehicle
US10/028,713 US6854154B2 (en) 2000-12-28 2001-12-28 Wiper assembly with movable wiper motor support

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